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Find the areas of rectangles with the fo...

Find the areas of rectangles with the following pairs of monomials as their length and breadth respectively: `(x , y)` (ii) (10, 5y) (iii) `(2x^2,\ 5y^2)` `(4a ,\ 3a^2)` (v) `(3m n ,\ 4n p)`

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`(i) (x, y)`
`x xx y`
`xy`
`(ii)(10, 5y)`
`10xx5y`
`15y`
`(iii)(2x^2,5y^2)`
`(2xx5)(x^2xxy^2)`
`10x^2y^2`
`(iv) (4a, 3a^2)`
`(4xx3)(axxa^2)`
`12a^3`
`(v) (3mn, 4np)`
`(3xx4)(mn xx np)`
`(12mn^2p)`
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